Each Philips VisaPure device has a unique serial number. You need the serial number if you want to register your VisaPure.
Where can I find the serial number on my VisaPure?
Note:
The serial number can be found underneath the replacement brush. It's a 14 character code with no spaces. It is composed of 3 letters (T, L, A) and 11 numbers.
Note:
The third character is always a number. This means that ''0'' is the number zero and not the letter ''O''.
Example: TL0A1310400605